<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="text" placeholder="请输入1-100之间的整数">
<input type="button" value="猜一猜" onclick="f()">
<div></div>
<script>
  //生成1-100之间的随机整数
  let x = parseInt(Math.random()*100)+1;
  let i = document.querySelector("input")
  let d = document.querySelector("div");
  let count = 0;
  function f() {
      count++;
      if (isNaN(i.value)){
          d.innerText="输入错误!";
          return;
      }
      if (i.value>x){
          d.innerText = "猜大了!";
      }else if(i.value<x){
          d.innerText = "猜小了!";
      }else{
          d.innerText = "恭喜你第"+count+"次猜对了!";
      }
  }
</script>
</body>
</html>